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公开(公告)号：US20050029214A1
公开(公告)日：2005-02-10
申请号：US10634559
申请日：2003-08-05
申请人： Howard Sommerfeld
发明人： Howard Sommerfeld
CPC分类号： B61G9/08
摘要： The present invention teaches a friction-type draft gear assembly including a housing having an open front and a closed rear portions. A compressible cushioning element is positioned within the rear portion with a seating arrangement abutting one end thereof adjacent the open front portion. A friction cushioning element is provided in the open front portion of the housing. A spring release mechanism is adapted for continuously urging the friction cushioning element outwardly from the compressible cushioning element thereby releasing such friction cushioning element after compression of such draft gear assembly. A compressible cushioning element includes a hydraulic cylinder having a slidable piston to define a high pressure chamber and a low pressure chamber. A means disposed within the piston are provided for increasing shock absorbing capacity of such draft gear assembly.
摘要翻译： 本发明教导了一种摩擦式起落架组件，其包括具有开口前部和封闭后部的壳体。 可压缩的缓冲元件位于后部中，并具有邻近开口前部邻接其一端的座位装置。 摩擦缓冲元件设置在壳体的敞开前部。 弹簧释放机构适于从可压缩缓冲元件向外持续地推动摩擦缓冲元件，从而在压缩该牵引齿轮组件之后释放该摩擦缓冲元件。 可压缩缓冲元件包括具有可滑动活塞以限定高压室和低压室的液压缸。 设置在活塞内的装置用于增加这种牵引装置的冲击吸收能力。
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公开(公告)号：US5826735A
公开(公告)日：1998-10-27
申请号：US744493
申请日：1996-11-12
申请人： Glen L. Litten
发明人： Glen L. Litten
CPC分类号： F16F9/512 , B61G9/08 , F16F9/34 , Y10T137/7853
摘要： A valving system for a rail car cushion device including several pressure control relief sequence valves (PCRS) mounted in the cylinder wall of the cushion device each having hydraulic biasing applied to retain a valve piston against a seat until a preload pressure is reached, with one or more optional spike control (SC) valves mounted in a cushion device piston head.
摘要翻译： 一种用于轨道汽车缓冲装置的阀门系统，包括安装在缓冲装置的气缸壁中的多个压力控制释放顺序阀（PCRS），每个压力控制释放顺序阀均具有施加液压偏压以将阀活塞保持抵靠座椅直到达到预压力，其中一个 或更多可选的尖峰控制（SC）阀安装在缓冲装置活塞头中。
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公开(公告)号：US5676265A
公开(公告)日：1997-10-14
申请号：US640597
申请日：1996-05-01
申请人： Lawrence E. Miller
发明人： Lawrence E. Miller
CPC分类号： B61G9/08
摘要： A railcar cushioning device includes an elastomeric spring and a hydraulic shock absorber member. The fluid accumulator is located outside of and above the fluid chambers. The accumulator is in communication with the fluid chamber in a non-stroked position, causing entrapped air to be displaced by the fluid, into the accumulator. Free of air, the shock absorber immediately responds to impact forces. The elastomeric spring reduces peak impact forces and returns the piston of the shock absorber to its non-stroked position. The elastomeric spring also absorbs draft forces.
摘要翻译： 轨道车缓冲装置包括弹性体弹簧和液压减震器构件。 流体储存器位于流体室的外部和上方。 蓄能器与未流动位置的流体室连通，使得夹带的空气被流体移动到蓄能器中。 无空气，减震器立即响应冲击力。 弹性体弹簧减小峰值冲击力，并将减震器的活塞返回到非冲击位置。 弹性体弹簧还吸收牵伸力。
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公开(公告)号：US5642823A
公开(公告)日：1997-07-01
申请号：US666920
申请日：1996-06-09
IPC分类号： B61G9/08
CPC分类号： B61G9/08
摘要： A railcar shock absorber has neutral position in which the piston is spaced between buff and draft ends of the cylinder. An external spring is mounted to the shock absorber. A slider rod has one end mounted to the coupling to move relative to the frame of the railcar. The spring has retainers on each end, and the slider rod passes through the retainers. One of the retainers is stationary relative to the frame. The other retainer floats relative to the frame and will abut a neutral stop of the frame when the spring is in the maximum length position. An engagement member on the slider rod will further compress the spring if a draft shock occurs from the neutral position. If a buff shock occurs from the neutral position, the engagement member moves away from the floating retainer.
摘要翻译： 轨道式减震器具有中间位置，其中活塞在气缸的凸轮和牵伸端之间隔开。 外部弹簧安装在减震器上。 滑动杆的一端安装到联接器以相对于轨道车辆的框架移动。 弹簧在每个端部具有保持器，并且滑动杆穿过保持器。 保持器中的一个相对于框架是静止的。 当弹簧处于最大长度位置时，另一个保持架相对于框架漂浮并且抵靠框架的中立挡块。 如果从中立位置发生牵引冲击，则滑杆上的接合构件将进一步压缩弹簧。 如果从中立位置发生抛光冲击，则接合构件移动离开浮动保持器。
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公开(公告)号：US5076451A
公开(公告)日：1991-12-31
申请号：US434299
申请日：1989-11-13
摘要： A hydraulic cushioning unit includes a high pressure cylinder having a piston therein and a piston rod extended through the rod end of the cylinder. The cylinder is contained within an outer housing. A head casting closes the head ends of the cylinder and housing and an end cap closes the rod ends thereof. The end cap includes a ball stop sleeve protruding interiorly of the cylinder for cooperating with a ball valve port through the cylinder adjacent the rod end thereof to accomplish returned valving of fluid into the high pressure cylinder behind the piston. The same ball stop sleeve supports a resilient bumper for limiting the extent of movement of the cylinder in response to draft forces.
摘要翻译： 液压缓冲单元包括其中具有活塞的高压缸和延伸穿过气缸的杆端的活塞杆。 气缸容纳在外壳内。 头部铸造封闭气缸和壳体的头端，并且端盖关闭其杆端。 端盖包括在气缸内部突出的止挡套筒，用于与邻近其杆端的气缸与球阀端口配合，以实现流体进入活塞后方的高压缸的返回阀。 相同的球止动套筒支撑弹性保险杠，用于响应于牵引力限制气缸的运动程度。
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公开(公告)号：US3907121A
公开(公告)日：1975-09-23
申请号：US46833174
申请日：1974-05-08
申请人： ACF IND INC
发明人： CARLE ROSS G , POWELL RICHARD G
CPC分类号： B61G9/08
摘要： A force transmitting member is connected to an end of car hydraulic cushioning device to transmit coupler forces to the center sill of a railway car underframe upon buff and draft loads applied to the coupler. The hydraulic cushioning device has a relatively large diameter hydraulic cylinder and a force transmitting member is connected about the small diameter cylindrical member and mounted within slots on the center sill for transmitting forces laterally outwardly from the small diameter cylindrical member directly to the center sill.
摘要翻译： 力传递构件连接到汽车液压缓冲装置的端部，以将耦合器力传递到铁路车辆底架上的中心梁上，并在施加到联接器上的减速和牵伸载荷上。 液压缓冲装置具有相对大直径的液压缸，并且力传递构件围绕小直径圆柱形构件连接并且安装在中心梁上的狭槽内，用于将力从小直径圆柱形构件横向向外传递到中心梁。
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公开(公告)号：US3633763A
公开(公告)日：1972-01-11
申请号：US3633763D
申请日：1969-12-31
申请人： PULLMAN INC
发明人： PETERSON WILLIAM H
摘要： A pressure relief valve arrangement for use in a double-acting hydraulic piston and cylinder cushioning device which prevents buff and draft impacts from damaging lading in a railway car. The pressure relief valve is located in a radial bore in the movable piston head which connects passages communicating with the highand low-pressure areas and comprises a cylindrical valve spool biased by a compression spring. The spring maintains the valve spool in a closed position against the end of the passage to the low-pressure fluid thus cutting off fluid flow between the highand low-pressure areas. When a predetermined pressure is reached in a low-pressure cylinder, indicating an excessively high pressure in the high-pressure chamber, the relief valve will open the passages connecting the high- and low-pressure areas thus providing relief for the high-pressure fluid.
摘要翻译： 一种用于双作用液压活塞和气缸缓冲装置的减压阀装置，其防止磨损和牵引冲击在铁路车辆中损坏提升。 减压阀位于可移动活塞头的径向孔中，该径向孔连接与高压区域和低压区域连通的通道，并且包括由压缩弹簧偏压的圆柱形阀芯。 弹簧将阀芯保持在关闭位置，抵靠通向低压流体的端部，从而切断高压区域和低压区域之间的流体流动。 当在低压气缸中达到预定压力时，表示高压室中的压力过高，安全阀将打开连接高压区和低压区的通道，从而为高压流体提供释放 。
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公开(公告)号：US3596773A
公开(公告)日：1971-08-03
申请号：US3596773D
申请日：1969-02-14
申请人： PULLMAN INC
发明人： PETERSON WILLIAM H
CPC分类号： B61G9/08
摘要： A double-acting hydraulic cushion unit for a railway car which is formed with a hydraulic-fluid-filled cylinder having a closed end and an open end afforded by an apertured cylinder head. A piston assembly is disposed for relative reciprocating movement within the cylinder and includes a piston rod which slidingly moves through the cylinder head. The unit is provided with a flexible accumulator boot connected to the cylinder head and to the piston rod to close the open end of the cylinder. A metering means comprises a metering pin on the cylinder which cooperates with a slidable orifice plate in the piston, the orifice plate having one position in buff impact and another position on the return stroke of the piston assembly to facilitate the transfer of fluid from one side of the piston head to the other. A fluidpressure-responsive valve means is movably disposed in a chamber contiguous with the accumulator to a position overlying passages communicating with the accumulator and to a position clear of said passages. The fluid-pressure-responsive valve is designed to also restrict the flow of fluid from one side of the piston during the return stroke of the piston and upon a draft impact stroke to cushion said impact. The piston rod also includes metering openings also serving on the return stroke to meter the fluid to the accumulator boot. In one embodiment relief valves are provided in the piston to open upon predetermined fluid pressures on opposite sides of said piston.
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公开(公告)号：US3589527A
公开(公告)日：1971-06-29
申请号：US3589527D
申请日：1968-07-15
申请人： HALLIBURTON CO
发明人： SEAY ORUM E , STEPHENSON JACK G , ABBOTT ROBERT E
CPC分类号： B61G9/08
摘要： Method and apparatus for controlling ''''run-in'''' train action and car coupling phenomena. A normally open valve means continuously maintains a relatively low level of impedance operable to resist movement of draft gear except when a ''''run-in'''' phenomena is encountered. When a ''''runin'''' phenomena is encountered, the valve means operates to increase an hydraulic impedance level acting on the draft gear so as to regulate draft gear movement during a ''''run-in'''' event. A disabling mechanism operates to maintain the valve means in a relatively open condition when high level buff coupling forces are imposed on the draft gear so as to provide a generally low level of impedance resisting draft gear movement during the application of high energy impact shocks to the draft gear.
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公开(公告)号：US3559818A
公开(公告)日：1971-02-02
申请号：US3559818D
申请日：1969-02-14
申请人： PULLMAN INC
发明人： KNIPPEL WILLIAM H , STARK MARVIN
CPC分类号： B61G9/08
摘要： A hydraulic cushioning device and draft gear is disposed in cushion pockets at opposite ends of a center sill. The cushioning device comprises a hydraulic cylinder with a piston assembly slidable lengthwise therein. The cylinder is anchored within the center sill by removable stops which extend through the center sill. The piston assembly includes a piston rod which projects through an end wall of a yoke housing and is retained therein by means of a connecting element seated in a socket. The yoke housing is provided with outward projections forming, with a pair of removable stops projecting through the center sill, a pair of spring pockets which contain springs adapted to return the piston assembly to a neutral position during draft impacts. The yoke housing includes a coupler shank which is movable within the yoke housing to transmit buff impacts directly to the connecting element of the piston rod.
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